Electric locomotive.



N. D. LEVN.

ELECTRiC LOCOMOTIVE.

APPLlcArloN HILL-D ocT.4\,19o9. RENEWED )una 1s. 19u.

l @il il jr i Patented. Nov. 20, 191'?.

2 SHEETS-SHEET I.

witnzooeo N. D. LEVIN.

ELECTRIC LOCOMOTIVE.

APPUCATIOM man DCT. 1. 1909. RENEWED M4516. 1911.

Patented Nov. 20, 1917.

2 SHEETS-SHEET 2- rien Asraims narnia rieten.

NILS D. LEVIN, OF COLUMBUS, OHIO, ASSIGNOR TO THE JEFFREY MANUFACTURNG COMPANY, A CORPORATION OF OHIO.

ELECTRIC LocolvioTIvE.

Application filed October 4, 1909, Serial No. 520,881.

fb all whom t may concern.'

Be it known that l, N ILs D. LEVIN, a citizen of the United States, residing at Columbus, in the county of Franklin andState of (lhio, have invented certain new and useful Improvements in Electric Locomotives, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to electric locomotives of the type provided with reels for winding and unwinding electric conductor cables. Locomotives of this class are now well known and are especially adapted for use in coal and similar mines to enter side entries and rooms which are not provided with trolley wires or other permanent conductors. ln operation the conductor cable is secured to a trolley wire or other condnetor, and current is supplied through the cable to cause the locomotive to advance into a side entry or room.' As the locomotive vnieves forward, the cable is automatically unwound from the reel. lVhen the locomotive returns, current is still supplied through the cable and the cable is automatically rewound upon the reel.

One of the objects ot' this invention is to provide ina locomotive of the class described, an improved mounting of the motor and brake mechanisms for controlling the locomotive and of the reel and reel driving mechanism. A further object is to provide improved means for drivingand controlling the reel.

Inv the accompanying drawings, which form a part of this specification, I have shown the embodiment of my invention which I consider preferable, but it will be understood that modifications and changes may be made without departing from thespirit of my invention.

Of the drawings- Figure 1 of the drawings is a side elef vation of a locomotive equipped in acordance with my invention.

Fig. 2 is a plan View of same.

Fig. 3 is a side view of the reel and adjacent parts of the locomotive, to illustrate the manner in which the reel is driven.

Fig. 4 is a vertical cross section of the reel.

l indicates the main frame of the locomotive, which consists of a single casting formed with the side-walls 2, 2, and the top Speciication of Letters Patent.

Patented Nov.. 20, w17. Renewed `Tune 16, 1917. Serial No. 175,213.

wall 3. In the four upper corners ot this casting, cavities l are provided to serve es sand boxes. l. U

Each of the side walls is recessed horizontally below and between these sand boxes, and in the recesses are mounted ,the locomotive wheels 5, 5', fixed upon the axles 6, 6. lilaeh of the side walls, 2, of the frame is formed with upwardly extending recesses 7 and S to receive axle boxes 9 and l0 and axles il, o. The forward recess` 7 is smaller than the recess 8, and in it is secured in rigid position the axle box 10,betweenwhich and the side frame is suitably journaled the axle (i. It is evident that the forward axle is not tree to have vertical play with re .in ways formed on theside walls of the recess 8. The usual springs 1l are interposed between the frame 2. and the axle boxes 9 to absorb shocks and jars. lt will be observed that the more or less delicately con strocted and adjusted reel mechanism, indicated as a whole, by the numeral 3l, is mounted at the rear end of the locomotive where it is protected from vibration by the springs l1; and that this spring-mounted end ot the locomotive is also equipped with the controlling levers and motormans seat, so that the operator may be likewise prolooted from the jars to which the wheels and axles are subjected.

The ield frame parts 13 of the locomotive motor are east integrally with the `Locomotive trame l. The armature shaft 'lfl of the motor is iournaled in the centrally recessed parts 2 ot' the side plates 2 ot' the frame casting. The armature pinion i5 at one end ol" the sha lit meshes with the intermediate spur gear lo on the stud shai't loa, which, in turn. meshes with the spur gear 17 on the shaft lT. Mounted upon the same shaft with the spur reni-1T zind rigidly Iconneetecil thereto is the pinion i8, which meshes with the gear wheel 19 mounted upon the forward loeomotivI axle. By means ol this gearing, which is mounted so as to be bodily immovable with respect to the locomotive traine, the power of the motor is transmitted to the forward axle 6 and the locomotive is propelled along the track. Since thisl axle is not movable bodily with respect to the locomotive frame, this gearing is at all times lil@ ,6 as a center.

The locomotive brake is applied to the motor armature 14 instead of to the car wheels, as is usually the case. Upon the outer end of the armature shaft 1.4, the brake wheel 20 is keyed. rPhe brake band 21, which frictionally engages the brake wheel in the usual manner is operated by means ot' the bell crank 22, connecting rod '23, bell crank Q4, rod 25 and hand lever Q6, the latter being mounted in a position handy to the motorman. By means ot the lever 26 the brake band can be tightened, and the armature shaft, the power transmitting gearing and the forward track wheels 5 can be retarded and stopped.

At the rear end of the locomotive the motormans compartment formed ot structural steel is secured to the locomotive frame 1. 1t comprises side plates 27 and floor plate 28. To this structural steel is secured the end frame 29. A similar' end frame 30 at the front end of the locomotive is secured to the main frame casting l. The cable reel 31 is rotatably mounted at the rear end of the locomotive in bearing blocks 32 suitably supported upon the frame structure ot the locomotive. It comprises the drum made up of a plurality of circular wooden disks bolted together' and the annular ianges 3l secured to `the drum and adapted to prevent lateral displacement of the cable from the drum. The duplex cable 35 is 'forked at its inner end, ,one branch 36 being secured to the metallic hub piece 37 and the other branch 3S leading to the hub 39. The cable is passed through suitable antifriction guides A 40 as it leaves the reel.

Thetwo end shafts ll, 42 are rigidly seated in the wooden drinn with their axes in alinement. The inner adjacent ends of these stub shafts are separated by the insulating material of the drum and bymeans of the `hubs 37, 39, by which they are surroundedfx They are connected to the positive and negative conductors respectively of the cable The bearing box 32 is mounted on the wooden block 4?, by' means of which it is insulated from the locomotive frame. The current is conducted to the motor terminal byl the wirel, which is. me chanically and electrically connected With the bearing 32 in the manner shown in Fig. 4.- ot' the drawings. The other bearing 32-is formed integrally with the iron standard 45, which is bolted to the Iioor plate :28v of the motormans compartment and serves to connect the return conductor 38 with the grounded terminal of the locomotivemotor.

Rope lwheel 4G is formed as an integral part of the same casting with the hub 39 and is engaged by the drive rope 47, which also passes around the rope pulley i8, which is rigidly secured to the axle/G. The tension in the drive rope is regulated by the idler pulley 49, which is journaled in one end of the foot lever 50. rlhis lever is pivoted inA termediate ot' its ends at 5l to standard l5 and at its other end is provided with a foot rest 52, by means ot which the inotorman can increase or diminish the tension in the rope .4.7. Stub shaft llhas keyed upon it the hand wheel 53 which serves as additional means t'or controlling the unwinding of the reel and as a means t'or manually rotating` the reel in a winding direction.v The motorman may prevent the overrunning of the cable when the locomotive is moving away from the ixed conductor by holding his hand against the hand wheel Vhenthe locomotive is slowing down and the cable is paying out too freely, the rotation of the rcel can be checked by tightening the rope 47, which then acts as a brake. At times when the locomotive is coming out of a room and the cable is being wound upon the reel, the treadle lever 50 is used to apply pressure between the rope wheels suilicient to cause the reel to wind the cable without, however,

being great enough to bring about an undue strain in the cable.

Because the brake is applied to the locomotive motor, which is geared to but one ot the pairs of driving wheels and because the other pair of driving wheels are connected to the reel, the locomotive can be freely and rapidly stopped, even so quickly as to skid the front wheels 5, without affecting theilniiorm and steady transmission of power from the rear p'air ot wheels to the reel. In this way, the winding of the cable is provided for at all times when the locomotive is moving toward the outer end of the cable, and the formation of slack in the cable in front of the locomotive and the cuttingof this slack cable by the track wheels is entirely prevented.

What I claim isl. In an electric locomotive, the co1nbination of a frame, two axles, on one of which the traine is unyieldably and on the other yieldably mounted, track wheels -'or the axles, an electric motor on the frame geared to tlle first said axle, a cablereel mounted on the frame, flexible drivingl devices connecting the rcel and the second said axle, and a conductor cable on the reel adapted to carry current from a lixcd conductor to the said motor.

2. In an electric locomotive, the combination ot' a frame, two axles, on one ot' which awe-thesis trollalole brake connected for resisting the rotation or the first said axle, a cable reel on the frame adjacent the second said axle, ilexible driving devices connecting the rcel and the second said axle, and a conductor cable -on the reel adapted to carry current from a fixed conductor to the 'said motor.

3. The combination in an electric locomotive of a frame, a pair of axles,` on one of Which-the frame is unyieldably and on the other yie-ldably mounted, track wheels for the axles, driving mechanism for the rigidly mounted axle mounted in fixed position on the frame comprising a motor and power transmitting mechanism between the motor andi axle,a brake mechanism acting directly on the driving mechanism to' retard the rotation of the rigidly mounted axle only, a

eable reel, a conductor cable wound thereon and electrically connected with the motor, and power transmitting mechanism connect ing the unbralied axle with the reel.

et. In an electric locomotive, the combination of a frame, two axles on one of which the frame is rigidly mounted and on thev other of which it is mounted vertically yieldably, track wheels for the axles, a motor rigidly mounted on the frame, gearing loetween the motor and the rigid axle, a cable reel on the frame, a conductor calole electrically connected to the motor andladapted to be wound on the reel, and a power con nection between the yieldalole axle and the reel comprising a rictionally acting endless flexible power transmitting element.

In testimony' whereof l atlix my signature, in presence of two witnesses.

NILS D LEVIN. Witnesses H. B. ALExANDEn, G. B. Nolens. 

